Nitrile Rubber Diaphragm Seals Molded Buna-N Gaskets Compression Molding Transfer Molding Rubber Injection Molding

Nitrile Rubber Diaphragm Seals Molded Buna-N Gaskets Compression Molding Transfer Molding Rubber Injection Molding


Introduction:

Hongum specializes in precision die cut and molded nitrile (buna-n) rubber gaskets and seals for applications and industries worldwide. Nitrile rubber, also known as Buna-N and NBR, is the most widely used elastomer for gaskets and seals. Its properties provide excellent resistance to oils, solvents, gasoline, and petroleum based fluids. Due to its resilience, nitrile is used in applications requiring resistance to extreme hot and cold temperatures, abrasion, water, and gas permeability. Nitrile rubber functions well in temperatures ranging from -40°F to +212°F, intermittent to +230°F.

The main products of rubber sealing gaskets are: silicone pads, nitrile rubber pads, fluorine rubber pads, and other rubber pads.




Die Cut Nitrile (Buna-N) Gaskets

Hongum provides die cut nitrile gaskets in a wide variety of grades, thicknesses and hardness. The standard thickness of nitrile rubber ranges from 1/64″ to 1/4″ thick. Nitrile rubbers hardness (durometer) generally ranges from 30 to 90 durometer, Shore A. Die cut nitrile gaskets are black in color however our FDA (Food Grade) nitrile gaskets are also offered in white. Nitrile gaskets are available with or without pressure sensitive adhesive (PSA) backing.


Molded Nitrile, Buna-N Gaskets (NBR)
Hongum specializes in molded nitrile gaskets and seals. Our custom nitrile molding capabilities include Compression Molding, Transfer Molding, and Rubber Injection Molding. Nitrile (NBR) compounds are available from 40 to 90 durometer, Shore A. Molded nitrile gaskets are usually black in color, however custom color compounding is available. Food Grade “FDA Approved” Nitrile (NBR) and Hydrogenated Acryonitrile (HNBR), also referred to as Highly Saturated Nitrile (HSN), are also universal molding compounds that are frequently used. Nitrile rubber molding tolerances are compliant with rubber molding industry standard RMA A2 Precision tolerances.


Available Nitrile Grades
Commercial Grade Nitrile (Buna-N)
Mid Grade Nitrile
High Grade Premium Nitrile (Buna-N)
FDA White Nitrile (Buna-N)
Transformer Oil Nitrile (Buna-N)
Bio-Diesel Nitrile (Buna-N)
Nitrile (Buna-N) Sponge


NBR Material:

NBR has excellent oil resistance. The trans form accounts for about 78% of the typical NBR structure. Due to the cyano group in the molecular chain structure of NBR, oil resistance (such as resistance to mineral oil, liquid fuel, animal and vegetable oils and solvents) is better than natural rubber, neoprene and styrene-butadiene rubber. Compared with other rubbers, NBR has a wider range of service temperature. Its long-term service temperature is 120°C. At the same time, NBR has good low temperature resistance, and the lowest glass transition temperature can reach -55°C.

Key Selection Considerations for Gasket Materials

When choosing a gasket material, there are several factors to keep in mind to ensure the one chosen is appropriate for the intended application. Some of the key considerations are:

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• Our service:

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  1. Packaging is neutral packing or customized packing.
  2. We will reply you within 24 hours.
  3. We will also provide you with good after-sales service.
  4. OEM or ODM orders are welcomed.
  5. Trial orders are acceptable.
  6. High quality and factory price.
  7. 100% ensured the quality.

Hongum is specialized in research, production, sales, and distribution. It is located in the base of technology transfer of CAS, committed to research and development of new materials in both rubber and plastic industry.

Hongum supply various of rubber diaphragms, dampers and all kinds of other rubber and plastic hardwares for boat, yacht, wharf and sea farm industries, such as marine float, fast ray paddle, and other boat and wharf rubber and plastic accessories.

We have a full set of advanced production equipment from vulcanizing to final shipment, with international standards, using the same advanced production process, also have a full range of laboratory testing equipment, can conduct comprehensive experiments and test a variety of rubber and plastic material properties, also product performance tests. We have the most professional technical team which can integrate your idea and provide the best professional advice. With the most professional service and stable quality we have won the unanimous approval of the majority of domestic customers, and exported to Russia, the United States, Canada, Britain, India, Singapore and other international markets.

We always adhere to the "service-oriented, innovative, and provide customers with professional solutions" concept to create value, to achieve the cooperation successful and win together.

Our team has a number of person who love new material industry, full of passion, and the same mind. Our needs are derived from the public, we have the professional technical team for seal integration, we are your all-perspective communication consultant.